public async Task <IActionResult> GetMenu(int menuItemId)
{
var expr = from getMenuItem in RestaurantDomain.GetMenuItemById(menuItemId)
select getMenuItem;
var exprResult = await interpreter.Interpret(expr, Unit.Default);
return(await exprResult.MatchAsync <IActionResult>(
async (selected) => // Menu Item was successfully selected
{
return (IActionResult)Ok(selected.MenuItemAgg.MenuItem);
},
async (notSelected) => // Menu Item not selected
{
return NotFound();
}
));
}